It’s hard to track the blue whale, which has almost been killed off by commercial whaling. Attaching radio devices to it is difficult and visual sightings are too unreliable to give real insight into its behavior.
So biologists were delighted early this year when, with the help of the US Navy, they are able to track a particular blue whale for 43 days recording its sounds. This was possible because of the Navy’s former top secret system of underwater listening devices across the oceans.
Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies.
Earth scientists announced at a news conference recently that they had used the system for closely observing a deep-sea volcanic eruption for the first time and that they planned similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in the ocean and global temperatures. Different layers of ocean water can act as channels for sounds focusing them in the same way a stethoscope(听诊器) does when it carries faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
1.The underwater listening system was originally designed _________________.
A. to trace and locate enemy ships
B. to observe deep sea volcanic eruptions
C. to study the movement of ocean currents
D. to replace the global radio communications network
2.The deep-sea listening system makes use of __________________.
A. the ability of sound to travel at high speed
B. the top-level technology of focusing sounds under water
C. the unique characteristic of layers of ocean water in carrying sound
D. low-frequency sounds traveling across different layers of water
3.What can we infer from the passage?
A. New radio devices are developed for tracking the blue whales.
B. Blue whales are no longer endangered with the new system.
C. Opinions differ on the use of military technology.
D. Military technology has great potential in civilian use.
4.What is the passage chiefly about?
A. An effort to protect an endangered marine species.
B. The civilian use of a military detection system.
C. The exposure of a US Navy top-secret weapon.
D. A new way to look into the behavior of blue whales.
高二英语阅读理解困难题
It’s hard to track the blue whale, which has almost been killed off by commercial whaling. Attaching radio devices to it is difficult and visual sightings are too unreliable to give real insight into its behavior.
So biologists were delighted early this year when, with the help of the US Navy, they are able to track a particular blue whale for 43 days recording its sounds. This was possible because of the Navy’s former top secret system of underwater listening devices across the oceans.
Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies.
Earth scientists announced at a news conference recently that they had used the system for closely observing a deep-sea volcanic eruption for the first time and that they planned similar studies. Other scientists have proposed to use the network for tracking ocean currents and measuring changes in the ocean and global temperatures. Different layers of ocean water can act as channels for sounds focusing them in the same way a stethoscope(听诊器) does when it carries faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
1.The underwater listening system was originally designed _________________.
A. to trace and locate enemy ships
B. to observe deep sea volcanic eruptions
C. to study the movement of ocean currents
D. to replace the global radio communications network
2.The deep-sea listening system makes use of __________________.
A. the ability of sound to travel at high speed
B. the top-level technology of focusing sounds under water
C. the unique characteristic of layers of ocean water in carrying sound
D. low-frequency sounds traveling across different layers of water
3.What can we infer from the passage?
A. New radio devices are developed for tracking the blue whales.
B. Blue whales are no longer endangered with the new system.
C. Opinions differ on the use of military technology.
D. Military technology has great potential in civilian use.
4.What is the passage chiefly about?
A. An effort to protect an endangered marine species.
B. The civilian use of a military detection system.
C. The exposure of a US Navy top-secret weapon.
D. A new way to look into the behavior of blue whales.
高二英语阅读理解困难题查看答案及解析
It is hard to track the blue whale, the ocean’s largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior.
So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of underwater listening devices spanning the oceans.
Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies.
Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption （爆发） for the first time and that they plan similar studies.
Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures.
The speed of sound in water is roughly one mile a second—slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope （听诊器） does when it carries faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
1.The passage is chiefly about ____ .
A. an effort to protect an endangered marine species
B. the civilian use of a military detection system
C. the exposure of a U.S. Navy top-secret weapon
D. a new way to look into the behavior of blue whales
2.The underwater listening system was originally designed ____ .
A. to trace and locate enemy vessels
B. to monitor deep-sea volcanic eruptions
C. to study the movement of ocean currents
D. to replace the global radio communications network
3.The deep-sea listening system makes use of ____ .
A. the sophisticated technology of focusing sounds under water
B. the capability of sound to travel at high speed
C. the unique property of layers of ocean water in transmitting sound
D. low-frequency sounds travelling across different layers of water____
4.It can be inferred from the passage that____.
A. new radio devices should be developed for tracking the endangered blue whales
B. blue whales are no longer endangered with the use of the new listening system
C. opinions differ as to whether civilian scientists should be allowed to use military technology
D. military technology has great potential in civilian use
5.Which of the following is true about the U.S. Navy underwater listening network?
A. It is now partly accessible to civilian scientists.
B. It has been replaced by a more advanced system.
C. It became useless to the military after the cold war.
D. It is indispensable in protecting endangered species.
高二英语阅读理解中等难度题查看答案及解析
It is hard to track the blue whale, the ocean’s largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior.
So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of underwater listening devices spanning the oceans.
Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies.
Earth scientists announced at a news conference recently that they had used the system for closely
monitoring a deep-sea volcanic eruption （爆发） for the first time and that they plan similar studies.
Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures.
The speed of sound in water is roughly one mile a second—slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope （听诊器） does when it carries faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
81. The passage is chiefly about ____ .
A. an effort to protect an endangered marine species
B. the civilian use of a military detection system
C. the exposure of a U.S. Navy top-secret weapon
D. a new way to look into the behavior of blue whales
82. The underwater listening system was originally designed ____ .
A. to trace and locate enemy vessels
B. to monitor deep-sea volcanic eruptions
C. to study the movement of ocean currents
D. to replace the global radio communications network
83. The deep-sea listening system makes use of ____ .
A. the sophisticated technology of focusing sounds under water
B. the capability of sound to travel at high speed
C. the unique property of layers of ocean water in transmitting sound
D. low-frequency sounds travelling across different layers of water____
84. It can be inferred from the passage that____.
A. new radio devices should be developed for tracking the endangered blue whales
B. blue whales are no longer endangered with the use of the new listening system
C. opinions differ as to whether civilian scientists should be allowed to use military technology
D. military technology has great potential in civilian use
85. Which of the following is true about the U.S. Navy underwater listening network?
A. It is now partly accessible to civilian scientists.
B. It has been replaced by a more advanced system.
C. It became useless to the military after the cold war.
D. It is indispensable in protecting endangered species.
高二英语阅读理解简单题查看答案及解析
The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of _____ 9-story building.
A. the; the B. a; a C. a; the D. the; a
高二英语单项填空简单题查看答案及解析
The biggest whale is _______ blue whale, which grows to be about 29 meters long—the height of______ 9-story building.
A．the; the B．a; a C．a; the D．the; a
高二英语单项填空中等难度题查看答案及解析
The biggest whale is ________ blue whale，which grows to be about 29 meters long—the height of ________ 9-story building.
A.the；the B.a；a C.a；the D.the；a
高二英语单项填空中等难度题查看答案及解析
The church tower which ________will be open to tourists soon. The work is almost finished.
A. has repaired B. has been repaired
C. is repaired D. is being repaired
高二英语单项填空中等难度题查看答案及解析
The church tower________, which will be open to tourists soon. The work is almost finished.
A. has restored B. has been restored C. is restoring D. is being restored
高二英语单项填空困难题查看答案及解析
A child who has once been pleased with a tale likes, as a rule, to have it retold in almost the same words, but this should not lead parents to treat printed fairy stories as formal texts. It is always much better to tell a story than read it out of a book, and, if a parent can produce what, in the actual situation of the time and the child, is an improvement on the printed text, so much the better.
A charge made against fairy tales is that they harm the child by frightening him or making him sad thinking. To prove the latter, one would have to show in a controlled experiment that children who have read fairy stories were more often sorry for cruelty than those who had not. As to fears, there are, I think, some cases of children being dangerously terrified by some fairy story. Often, however, this arises from the child having heard the story once. Familiarity with the story by repetition turns the pain of fear into the pleasure of a fear faced and mastered.
There are also people who object to fairy stories on the grounds that they are not objectively true, that giants, witches, two-headed dragons, magic carpets, etc. do not exist; and that, instead of being fond of the strange side in fairy tales, the child should be taught to learn the reality by studying history. I find such people, I must say so peculiar that I do not know how to argue with them. If their case were sound, the world should be full of mad men attempting to fly from New York to Philadelphia on a stick or covering a telephone with kisses in the belief that it was their beloved girl -friend.
No fairy story ever declared to be a description of the real world and no clever child has ever believed that it was.
1.The author considers that a fairy story is more effective when it is ____.
A．repeated without any change B．treated as a joke
C．made some changes by the parent D．set in the present
2.According to the passage, great fear can take place in a child when the story is ____.
A．in a realistic setting B．heard for the first time
C．repeated too often D．told in a different way
3.The advantage claimed (提出) for repeating fairy stories to young children is that it ____.
A．makes them less fearful
B．develops their power of memory
C．makes them believe there is nothing to be afraid of
D．encourages them not to have strange beliefs
4.The author's mention of sticks and telephones is meant to suggest that ______.
A．fairy stories are still being made up
B．there is some misunderstanding about fairy tales
C．people try to modernize old fairy stories
D．there is more concern for children's fears nowadays
5.One of the reasons why some people are not in favor of fairy tales is that _______.
A．they are full of imagination
B．they just make up the stories which are far from the truth
C．they are not interesting
D．they make teachers of history difficult to teach
高二英语阅读理解中等难度题查看答案及解析
A child who has once been pleased with a tale likes, as a rule, to have it retold in almost the same words, but this should not lead parents to treat printed fairy stories as formal texts. It is always much better to tell a story than read it out of a book, and, if a parent can produce what, in the actual situation of the time and the child, is an improvement on the printed text, so much the better.
A charge made against fairy tales is that they harm the child by frightening him or making him sad thinking. To prove the latter, one would have to show in a controlled experiment that children who have read fairy stories were more often sorry for cruelty than those who had not. As to fears, there are, I think, some cases of children being dangerously terrified by some fairy story. Often, however, this arises(出现) from the child having heard the story once. Familiarity with the story by repetition turns the pain of fear into the pleasure of a fear faced and mastered.
There are also people who object to fairy stories on the grounds that they are not objectively true, that giants, witches, two-headed dragons, magic carpets, etc. do not exist; and that, instead of being fond of the strange side in fairy tales, the child should be taught to learn the reality by studying history. I find such people, I must say, so peculiar(奇怪的) that I do not know how to argue with them. If their case were sound, the world should be full of mad men attempting to fly from New York to Philadelphia on a stick or covering a telephone with kisses in the belief that it was their beloved girlfriend.
No fairy story ever declared to be a description of the real world and no clever child has ever believed that it was.
1.The author considers that a fairy story is more effective when _______.
A. it is repeated without any change B. it is treated as a joke
C. some changes are made to it by a parent D. it is set in the present
2.According to the passage, great fear can take place in a child when the story is _______.
A. in a realistic setting B. told in a different way
C. repeated too often D. heard for the first time
3.The advantage claimed(提出) for repeating fairy stories to young children is that it _______.
A. develops their power of memory
B. makes them less fearful
C. makes them believe there is nothing to be afraid of
D. encourages them not to have strange beliefs
4.One of the reasons why some people are not in favor of fairy tales is that _______.
A. they are full of imagination
B. they make teachers of history difficult to teach
C. they are not interesting
D. they are just made up of the stories which are far from the truth
高二英语阅读理解简单题查看答案及解析